Airbag device for panorama roof

ABSTRACT

An airbag device for a panorama roof may include: a roller disposed under a panorama roof and having a blind wound therearound, the blind serving to cover the panorama roof; a head liner covering the roller; an inflator disposed between the panorama roof and the roller; a guide tunnel connected to the inflator to guide gas; and a cushion connected to the guide tunnel, and deployed by gas guided through the guide tunnel so as to cover the panorama roof.

CROSS-REFERENCES TO RELATED APPLICATIONS

The present application claims priority to Korean application number 10-2017-0172609, filed on Dec. 14, 2017, which is incorporated by reference in its entirety.

BACKGROUND OF THE INVENTION

The present invention relates to an airbag device for a panorama roof, and more particularly, to an airbag device for a panorama roof, which can prevent a passenger from being injured or thrown to the outside even when the roof of a vehicle is damaged in case of a rollover accident of the vehicle.

In general, a vehicle transports passengers. The vehicle has airbag devices to protect passengers. For example, the airbag devices are installed at the front, both sides and the top of the vehicle. Each of the airbag devices includes an inflator and an airbag. When a certain magnitude of external shock is applied to the vehicle, the airbag is expanded while gas generated from the inflator is injected into the airbag. The airbag is rapidly expanded to protect the body of a passenger. When the vehicle is turned over, the airbag installed at the top of the vehicle is expanded. The airbag is deployed toward the center from both sides of a panorama roof.

In the related art, since the airbag at the top of the vehicle is deployed toward the center from both sides of the panorama roof, the center of the panorama roof may not be completely covered by the airbag, which increases the possibility that a passenger will be injured. Furthermore, since the support force of the airbag is weak in the center of the panorama roof, the airbag may be separated from the center of the panorama roof. Therefore, there is a demand for a device capable of solving the problems.

SUMMARY OF THE INVENTION

Embodiments of the present invention are directed to an airbag device for a panorama roof, which can prevent a passenger from being injured or thrown to the outside even when the roof of a vehicle is damaged in case of a rollover accident of the vehicle.

In one embodiment, an airbag device for a panorama roof may include: a roller disposed under a panorama roof and having a blind wound therearound, the blind serving to cover the panorama roof; a head liner covering the roller; an inflator disposed between the panorama roof and the roller; a guide tunnel connected to the inflator to guide gas; and a cushion connected to the guide tunnel, and deployed by gas guided through the guide tunnel so as to cover the panorama roof.

The inflator may include: a gas generation part connected to the guide tunnel and supplying gas to the guide tunnel; and a gas fixing part fixing the gas generation part to the panorama roof.

The gas fixing part may be screwed to the bottom surface of the panorama roof.

The inflator may be disposed at the rear of the roller.

The guide tunnel may be disposed above the roller.

The cushion may include: a cushion deployment part folded and disposed above the head liner, and expanded and deployed by gas supplied from the inflator; and a cushion support part supporting the cushion deployment part.

The cushion support part may include: a support guide part disposed above the blind so as to support the cushion deployment part; and a support coupling part connected to the support guide part and mounted on the panorama roof.

The support guide part may have a U-shaped structure to limit side-to-side movement of the cushion deployment part.

The cushion deployment part may be disposed at an end of the head liner.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 schematically illustrates an airbag device for a panorama roof in accordance with an embodiment of the present invention.

FIG. 2 schematically illustrates that the airbag device for a panorama roof in accordance with the embodiment of the present invention is operated.

FIG. 3 schematically illustrates an inflator of the airbag device for a panorama roof in accordance with the embodiment of the present invention.

FIG. 4 schematically illustrates a cushion of the airbag device for a panorama roof in accordance with the embodiment of the present invention.

DESCRIPTION OF SPECIFIC EMBODIMENTS

Hereafter, an airbag device for a panorama roof in accordance with an embodiment of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the drawings are not to precise scale and may be exaggerated in thickness of lines or sizes of components for descriptive convenience and clarity only. Furthermore, the terms as used herein are defined by taking functions of the invention into account and can be changed according to the custom or intention of users or operators. Therefore, definition of the terms should be made according to the overall disclosures set forth herein.

FIG. 1 schematically illustrates an airbag device for a panorama roof in accordance with an embodiment of the present invention, and FIG. 2 schematically illustrates that the airbag device for a panorama roof in accordance with the embodiment of the present invention is operated. Referring to FIGS. 1 and 2, the airbag device 1 for a panorama roof in accordance with the embodiment of the present invention may include a panorama roof 10, a roller 20, a head liner 30, an inflator 40, a guide tunnel 50 and a cushion 60.

The panorama roof 10 may be disposed at the ceiling of a vehicle. The panorama roof 10 may include two lines of windows. When the window at the first line is slid, the panorama roof may provide a sense of openness. Hereafter, the window at the first line will be referred to as a first window, and the window at the second line will be referred to as a second window.

The roller 20 may be disposed under the panorama roof 10, and a blind 21 for covering the panorama roof 10 may be wound around the roller 20. For example, when the blind 21 wound around the roller 20 is unwound to move to the front end of the panorama roof 10, the blind 21 may cover the first and second windows of the panorama roof 10.

The head liner 30 may cover the roller 20. For example, the head liner 30 may indicate an interior material of the vehicle, and limit the exposure of the roller 20 to the outside. The blind 21 may be moved over an end of the head liner 30.

The inflator 40 may be disposed between the panorama roof 10 and the roller 20, the guide tunnel 50 may be connected to the inflator 40 to guide gas, and the cushion 60 may be connected to the guide tunnel 50. The cushion 60 may be covered by the head liner 30, and deployed by the gas guided through the guide tunnel 50 so as to cover the panorama roof 10. For example, the guide tunnel 50 and the cushion 60 may be integrated with each other.

Therefore, the gas discharged from the inflator 40 may pass through the guide tunnel 50 and deploy the cushion 60. At this time, the cushion 60 may be disposed adjacent to the end of the head liner 30, and thus rapidly cover the panorama roof 10.

FIG. 3 schematically illustrates the inflator of the airbag device for a panorama roof in accordance with the embodiment of the present invention. Referring to FIG. 3, the inflator 40 in accordance with the embodiment of the present invention may include a gas generation part 41 and a gas fixing part 42. The inflator 40 may be disposed at the rear of the roller 20.

The gas generation part 41 may be exploded to discharge gas, when a vehicle collision signal is received. The guide tunnel 50 may be connected to a discharge port of the gas generation part 41, and expanded by the discharged gas. For example, the gas generation part 41 may be disposed at the rear of the roller 20, and the guide tunnel 50 may be disposed above the roller 20.

The gas fixing part 42 may fix the gas generation part 41 to the panorama roof 10. For example, the gas fixing part 42 may be coupled to the outside of the gas generation part 41, and screwed to the bottom surface of the rear end of the frame of the panorama roof 10.

FIG. 4 schematically illustrates the cushion of the airbag device for a panorama roof in accordance with the embodiment of the present invention. Referring to FIG. 4, the cushion 60 in accordance with the embodiment of the present invention may include a cushion deployment part 61 and a cushion support part 62.

The cushion deployment part 61 may be folded and connected to the guide tunnel 50 before deployed. The cushion deployment part 61 may be disposed above the end of the head liner 30. For example, the cushion deployment part 61 may be disposed above the end of the head liner 30, and the blind 21 may be disposed between the head liner 30 and the cushion deployment part 61.

The cushion support part 62 may support the cushion deployment part 61. The cushion support part 62 in accordance with the embodiment of the present invention may include a support guide part 621 and a support coupling part 622.

The support guide part 621 may be disposed above the blind 21, and support the cushion deployment part 61. For example, the support guide part 621 may have a U-shaped structure to support the bottom surface and both side surfaces of the cushion deployment part 61, and thus limit the side-to-side movement of the cushion deployment part 61.

The support coupling part 622 may be connected to the support guide part 621, and mounted on the panorama roof 10. For example, the support coupling part 622 may be coupled to both sides of the support guide part 621, and fixed to the frame of the panorama roof 10.

The operation of the airbag device for a panorama roof in accordance with the embodiment of the present invention will be described as follows.

The inflator 40 may be mounted at the rear end of the panorama roof 10, and the roller 20 may be disposed at the front bottom of the inflator 40.

The guide tunnel 50 may be connected to the inflator 40, and the cushion 60 including the folded cushion deployment part 61 and the cushion support part 62 for supporting the cushion deployment part 61 may be disposed at the end of the guide tunnel 50. The cushion 60 may be covered by the head liner 30 so as not to be exposed to the outside, and the blind 21 which is wound around the roller 20 and unwound from the roller 20 may be disposed under the guide tunnel 50 and the cushion 60.

When a vehicle accident occurs in the above-described state, the inflator 40 receiving a sensing signal may be exploded to generate gas. The generated gas may be moved through the guide tunnel 50 and supplied to the cushion deployment part 61. The cushion deployment part 61 may be deployed by the supplied gas and sequentially cover the second window and the first window of the panorama roof 10, thereby protecting a passenger.

At this time, as the region to which the gas is initially supplied climbs over the roller 20, the guide tunnel 50 may be suppressed from being deployed downward. Furthermore, since the blind 21 is disposed under the guide tunnel 50 and the cushion 60, the guide tunnel 50 and the cushion 60 may be suppressed from being deployed downward, and rapidly deployed to the first window of the panorama roof 10.

In the airbag device 1 for a panorama roof in accordance with the embodiment of the present invention, the inflator 40 may be disposed between the roller 20 and the panorama roof 10 and covered by the head liner 30, which makes it possible to guarantee a passenger's safety when the inflator 40 is exploded.

Furthermore, since the blind 21 is disposed under the guide tunnel 50 and the cushion 60, the guide tunnel 50 and the cushion 60 can be rapidly deployed while suppressed from being deployed downward.

Although preferred embodiments of the invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as defined in the accompanying claims. 

What is claimed is:
 1. An airbag device for a panorama roof of a vehicle, comprising: a roller disposed under the panorama roof; a blind wound around the roller, wherein the roller is configured to wind and unwind the blind to uncover and cover the panorama roof; a head liner disposed under the roller and the blind for covering the roller and at least a portion of the blind; an inflator disposed between the panorama roof and the head liner and configured to inject gas in response to a vehicle collision signal; a guide tunnel connected to the inflator and configured to guide the gas; and a cushion connected to the guide tunnel, and configured to be deployed by the gas from the inflator through the guide tunnel so as to cover the panorama roof, wherein the guide tunnel comprises a portion disposed between the panorama roof and the roller and the cushion is disposed between the panorama roof and the blind such that the guide tunnel and the cushion are suppressed from being deployed downward by the roller and the blind, respectively, when the gas is injected into the guide tunnel and the cushion.
 2. The airbag device of claim 1, wherein the inflator comprises: a gas generation part connected to the guide tunnel and supplying gas to the guide tunnel; and a gas fixing part fixing the gas generation part to the panorama roof.
 3. The airbag device of claim 2, wherein the gas fixing part is screwed to a bottom surface of the panorama roof.
 4. The airbag device of claim 1, wherein the inflator is disposed at the rear of the roller.
 5. The airbag device of claim 4, wherein the guide tunnel is disposed above the roller such that the guide tunnel comprises the portion disposed between the roller and the panorama roof.
 6. The airbag device of claim 1, wherein the cushion comprises: a cushion deployment part folded and disposed above the head liner, and expanded and deployed by gas supplied from the inflator; and a cushion support part supporting the cushion deployment part.
 7. The airbag device of claim 6, wherein the cushion support part comprises: a support guide part disposed above the blind so as to support the cushion deployment part; and a support coupling part connected to the support guide part and mounted on the panorama roof.
 8. The airbag device of claim 7, wherein the support guide part has a U-shaped structure to limit side-to-side movement of the cushion deployment part.
 9. The airbag device of claim 6, wherein the cushion deployment part is disposed at an end of the head liner.
 10. The airbag device of claim 1, wherein the cushion is configured to deploy forward when the cushion is inflated by the gas from the inflator through the guide tunnel. 